344.44% is the change from 144 to 640
Calculation steps:
[( 640 - 144 ) ÷ 144] x 100 = 344.44%
Formula
Percentage change = [(640 - 144) / 144] x 100
Subtract the new number by the original number
640 - 144 = 496
496 ÷ 144 = 3.4444444444444446
3.4444444444444446 x 100 = 344.44%